Technical Team

A pressure switch is a form of switch that makes electrical contact when a certain set pressure has been reached on its input. This is used to provide on/off switching from a pneumatic or hydraulic source. The switch may be designed to make contact either on pressure rise or on pressure fall.

Switch Operation

The switch is passive, requiring no manual operation by the owner. Water pressure does it all. When the pressure drops, the normally open contacts close, completing the electrical circuit and activating the pump. When the set pressure is reached, the contacts open again, turning off the pump. Some switches in the water line work with a diaphragm pressing against a piston and spring inside the unit. The spring pressure is set by an adjustment screw. Sufficient pressure on the diaphragm keeps the switch "off." When the pressure drops, the switch activates. How does a Pressure Switch Work? Pressure Switch usually includes Capacitive or Piezoelectric transducer. When pressure is applied, transducer gives signal and the switch toggles. More items…Can you submit more information?